Inside, Percy was screaming a combination of Don't kill me and For Merlin's sake, don't touch me! Outwardly, however, he pulled himself up to his full height and mustered up as much dignity as he could.
"A... stereotype," he finally said after a scramble for words that would not get him killed. "As if I were not a person, but something that could be assumed because of the way I look or act. In fact," he added, on too much of a roll for his own good, "you did it as well, made judgements about my orientation based on no knowledge or facts whatsoever, simply looked at me and presumed you knew who I spent my time with."
He harrumphed and began walking around Seamus with his head held high. "Now if you'll excuse me, I have a meeting to attend."